Sash-lock.



I UNITED STATES PATENT OFFICE.

ROBERT HEINLE, OF ALLEGHENY, PENNSYLVANIA.

SASH-LOCK.

v No. 884,581.

Application filed July 17,

To all whom "it may concern.

Beit known that I, ROBERT l-IEINLE, a citizen of the United States, residing at Allegheny, in the State of Pennsylvania, have invented a certain new and useful Sash-Lock, of which the following is a specification.

My invention relates to fastenings for windows and the like, and particularly to means for safely fastening a window sash in open port the window at various places.

condition for ventilation, the object being to enable a window sash to be left open without danger of entry through the window by per.- sons outside, through manipulation of the sash fastening.

In the accompanying drawing illustrating one form of my invention, and as applied to the common sliding window sash, Figure 1 is an elevation with parts of the casing, etc., in section. Fig. 2 is an enlarged vertical sectional view through the locking bolt and catch in place in the sash and casing. Fig. 3 is a front elevation of the catch, and Figs. 4 and 5 are detailed views of the bolt itself.

Devices have been made heretofore for locking windows in closed position, and also devices have been used for fastening the window more or less securely at different elevations, but it is very desirable to beable to raise the lower sash or lower the upper sash for ventilation of a room without making it possible for intruders to enter. In my device the window sash is placed in the desired position for ventilation and the lock is yet incaable of being tam ered with from outside, ook and bolt not being exposed for manipulation unless the sash is completely closed; Thus from the drawings it will be seen that in the easement 6 of a window and closely contiguous to the edge of the sash 7 or 8, I have provided a catch in the form of a toothed bai' 10 to coperate with the sliding bolt 9 to sup- From igs. 2 and 4 it will appear that the inserted toothed bar 10 in the casing is provided with 4a series of teeth 12 that are sunk below the surface of the casing so that the bolt 9 may slide over them without its rear end being rojected outside of its guide sleeve 14. At

its two ends however, the bar 10 has an elevation bringing it flush with the casing so that when the bolt is over the surfaces 11 or 1 3 it is pushed out of its slot far enough for the head 15 of the bolt 9 to be turned so that it rests upon the outer end of the sleeve 14 as shown 1n Figs. 4 and 5. From this it will be evident that when, and only when, the sash Specification of Letters Patent.

Patented April 14, 1908.

is closed, can the headl ofithekboltlQIbe reached, and unless it is turned it can slide into the slot 14L of the sleeve 14 and the bolt will be pushed out by the spring 16 so as to engage one of the teeth 12 or 11. The catch on tooth or surface 11 is made higher than the teeth 12 so that even if by a wedge the bolt should be fastened in its collar 14 1n the position it would take in riding over a projection l2, yet it still protrudes so far that it cannot ride above projection 11. The toothed bar 10 is set in such a position that there is not room for a person to enter the window when the bolt comes up to its extreme position under the projection 11.

The essential feature of the device is that the sash lock cannot be moved to ino erative position without entirely closing t e sash, at which time of course one on the outside cannot reach the bolt at all. This device enables the window to be raised at the bottom or lowered at the top for ventilation while at the same time-insuring against any possible opening wide enough to admit an intruder from outside. Various advantages of the device will be evident.

Having thus described my invention and illustrated its use, what I claim as new and desire to secure by Letters Patent is the following:

1. A sash lock comprising a movable member and a catch, the movable member being entirely within the sash except when the sash is in closed position, whereby it cannot be rendered inoperative except the sash be closed.

2. A safety sash lock comprising a bolt in the sash entirely inclosed and out of reach except when the sash is closed, and means to protrude the bolt for manipulation when the sash is closed.

3. The combination with a sash and its casing, of a bolt inclosed in the side of the Serial No. 384,211.

gaged by the bolt to hold the sash in p ace, means on the casing to protrude the bolt from the sash when the latter is lowered and means on the bolt and sash to hold the bolt out of engagement, operable only when the sash is closed down. i

4. A sash lock comprising a bar embedded in the casing and having catches below the surface of the sash and one end raised flush with the sash, a spring pressed bolt mounted in the sash to engage said catch, said bolt being entirely inclosed except when it ensash out of reach, a catch on the casin' en-V CTT gages the raised end of the catch bar, substantelly as described.

5. In a, sash look the combination with a catch in the easing, of e sliding bolt inthe sash-having a laterally projecting heed, and e sleeve entirely inclosing and engaging said head While the bolt engages the catch, to prevent turning and allowing the bolt to be turned and supported on the sleeve When the ROBERT HEINLE. Witnesses C. T. BEA'r'rY, EUGENIA E. HEINLE. 

